A. slightly less than unity
B. equal to unity
C. slightly more than unity
D. equal to that ferromagnetic mate rials
Related Mcqs:
- The susceptibility of paramagnetic materials generally lies between____________?
A. KT3 and 1CT6
B. 1CT3 and 1CT7
C. KT4 and KT8
D. 10″2 and KT5 - The relative permeability of materials is not constant
A. diamagnetic
B. paramagnetic
C. ferromagnetic
D. insulating - Hysteresis loop in case of magnetically hard materials is more in shape as compared to magnetically soft materials
A. circular
B. triangular
C. rectangular
D. none of the above - When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon____________?
A. resistance of the coil
B. motion of the magnet
C. number of turns of the coil
D. pole strength of the magnet - The relative permeability is less than unity is case of_____________?
A. ferromagnetic materials
B. ferrites
C. non-ferrous materials
D. diamagnetic materials - The unit of relative permeability is_____________?
A. henry/metre
B. henry
C. henry/sq. m
D. it is dimensionless - For which of the following materials the net magnetic moment should be zero ?
A. Diamagnetic materials
B. Ferrimagnetic materials
C. Antiferromagnetic materials
D. Antiferrimagnetic materials - For which of the following materials the saturation value is the highest ?
A. Ferromagnetic materials
B. Paramagnetic materials
C. Diamagnetic materials
D. Ferrites - Which of the following materials are diamagnetic ?
A. Silver
B. Copper
C. Silver and copper
D. Iron - The materials having low retentivity are suitable for making_____________?
A. weak magnets
B. temporary magnets
C. permanent magnets
D. none of the above
